Cyber Threat Intelligence, Entrepreneur, Presentation Virtuoso

the topic changes. curiosity does not.

Hello and こんにちは!

I am Scott Jarkoff (ジャーカフ スコット),

a threat intelligence and cyber security professional, entrepreneur, visionary leader, presentation virtuoso, cyclist, tech geek, and wannabe iPhone photographer living and working in the heart of Tokyo, Japan.

a powerhouse on-stage speaker, delivering electrifying and profoundly impactful keynotes that captivate, challenge, and inspire.

a remarkably creative presenter featuring incredible visuals combined with striking insights on cyber threat actors, their evolving tradecraft, and the attacks defining modern cyber warfare. I illuminate the future of generative AI in offensive operations, the shifting cyber security landscape, and the critical thought leadership shaping the next era of digital conflict.

I write about cyber security, sophisticated cyber adversaries, global cyber attacks, threat intelligence, the eCrime ecosystem and the dark web economy, leadership, global and domestic travel, hiking trips in Japan, and occasionally post various photos taken with an iPhone and meager composition skills.

I am the ambitious co-founder and mastermind behind deviantART, the largest and most vibrant online art community the world has ever seen, launched on August 7, 2000.

I am orchestrating the inception of Praeryx, a new cyber threat intelligence startup currently in deep development.

the quiet architect of jark after dark, a nocturnal pursuit of the uncomfortable questions hiding behind polished narratives, built for those who suspect the official story is never the whole one. Jark After Dark logo

Finally, I live in Tokyo, Japan, where I architect and oversee these mission critical operations.

Reach out to me for inquiries.

Expertise Forged Under Pressure

Three decades across government and industry have forged a rare command of cyber security and threat intelligence. My experience spans technology and code, entrepreneurship, and the global stage. I have written software, scoured security logs, administered firewalls, and architected defense-grade systems. I have built companies, led exceptional teams, and directed regional intelligence strategy. I translate complex cyber realities into language understood from the engineering floor to the boardroom and the halls of government. In today’s sophisticated threat landscape, the ability to decode chaos into clarity and transform understanding into decisive action is not optional. It is imperative.

Intelligence

Built to an uncompromising standard, exposing hostile intent, anticipating the next move, and outmaneuvering the most capable nation-state adversaries by turning raw noise into advantage long before they strike.

Leadership

Exceeding expectations is only the baseline. I build and lead elite teams where innovation thrives, collaboration becomes a force multiplier, and elegant solutions achieve what others consider impossible.

Entrepreneur

Co-founder of deviantART and Praeryx, developing and building ambitious ventures, challenging established industries, and transforming revolutionary ideas into platforms, companies, and global communities with lasting impact.

Keynotes

Electrifying keynotes and commanding panel conversations exposing the forces reshaping cyber conflict, shattering conventional thinking, and leaving audiences with a radically clearer view of what comes next.

Latest Articles

DarkBlinders espionage campaign using fake recruitment and StarkMeet lures, Shelby malware, GitHub C2, and seven security vendor tracking views

DarkBlinders Shows Why Threat Actor Naming is a Hall of Mirrors

A fake job from Dubai Airports, a video app that never works, and a gigabyte gone from a Kurdish government cloud. One Iran-nexus espionage operation carries seven vendor names, runs its command-and-control through GitHub, and keeps collecting in the gap between what the industry can see and prove.

Chainalysis cyber security investigation platform showing a protected intelligence core surrounded by exposed customer identity data and professional user networks

Breaching Chainalysis Mapped the People Who Hunt Crypto Crime

Chainalysis identifies the people moving through the blockchain. A breach of its own systems reversed the lens, exposing identity data on the investigators, regulators, and compliance staff who track crypto crime. The firm calls the data non-sensitive and has not explained how the attacker got in.

Japan cyber sovereignty concept showing MIJXDR wrapped in Sovereign branding, institutional leadership, investment flows, and hidden infrastructure dependencies

Nihon Cyber Defence Is Selling Japan the Idea of Sovereignty

A former NSA director tells Japan to move faster, and the firm paying him sells the cure. Nihon Cyber Defence calls MIJXDR a fully sovereign, Made in Japan platform, then localizes it into Ukraine. Here, sovereignty is a label bought with public money, and the architecture is nowhere in sight.

DHS identity directory search for CUC revealing a mission graph linking 41K+ records, 55K+ access groups, and 39 HSI profiles

Metadata Unmasked the Undercover Agents

For years, the surveillance state called metadata harmless. Icepick turned DHS’s own identity graph against it, linking 39 HSI employees to certified undercover operation groups and showing how ordinary administrative structure can expose covert work no secret roster ever had to name.

Membership Plans

OSINT

Free. Open access. Independent daily cyber security analysis, available to everyone.

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SIGINT

Recommended

Standard. Complete access. Every written analysis, every member-only deep dive, and the full archive.

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  • Everything in OSINT
  • Every member-only deep dive
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HUMINT

Premium intelligence. Formal cyber threat intelligence reporting, downloadable data, and practical training.

$30 /month
$300 /year · 2 months free · Save 17%
  • Everything in SIGINT
  • Complete cyber threat intelligence reports
  • Full cyber threat intelligence training library

Work Experience

Co-Founder

Praeryx

2024-Current

Director, Threat Intelligence Strategy, APJ & META

CrowdStrike

2019-2024

Senior Security Advisor

McAfee JP

2013-2019

Chief, Cyber Security

United States Forces Japan (USFJ)

2008-2013

Senior Systems Engineer

MTC Technologies

2005-2008

Co-Founder

deviantART

2000-2005

Security Operations Center Supervisor

CSC

2000-2005

Telecommunications & Cyber Security

United States Navy

1990-1999